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Photo Science Inc.

Raster Data Refresh of GIS Vegetation Layers to Current Conditions Nathaniel Morton, GISP Remote Sensing Specialist, Photo Science April 30, Thursday,10:30 - 11:00 Room: Magpie B. Photo Science Inc. Founded in 1974 Headquarters in Lexington, KY 200+ employees 8 office locations

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Photo Science Inc.

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  1. Raster Data Refresh of GIS Vegetation Layers to Current ConditionsNathaniel Morton, GISPRemote Sensing Specialist, Photo ScienceApril 30, Thursday,10:30 - 11:00 Room: Magpie B

  2. Photo Science Inc. • Founded in 1974 • Headquarters in Lexington, KY • 200+ employees • 8 office locations • Full Service Geospatial Provider • GSTC GIS Services Contract • USDA FS Contract # 53-84N8-5-001 • Available to other agencies – BLM, NPS

  3. Raster Data Refresh of GIS Vegetation Layers to Current Conditions

  4. Boise, Payette & Sawtooth NFs

  5. Boise, Payette & Sawtooth NFs

  6. Boise, Payette & Sawtooth NFs

  7. Boise, Payette & Sawtooth NFs

  8. Acknowledgements • Boise NF – Carey Crist, Kathy Geier-Hayes, Randy Hayman, Lisa Nutt • Payette NF – Ana Egnew, Susan Miller, Chans O’Brien • Sawtooth NF – Dave Bassler, Bobbi Filbert, Brenda Geesey

  9. Outline • Purpose • Input Data • Pre-processing • Rule Sets • Methodology • Final Product • Data Utilization

  10. Purpose • Interim Solution • Age of the current data (13+ years old) • The number of acres disturbed since the last update (20-25% of Southwest Idaho acres).

  11. “Montana 1995” • Created by Univ. of Montana • Landsat Vegetation Mapping of the Southwest and Central Idaho Ecogroups Final Report • (Contract #: 53-0261-6-25) • Forested Use Only • Covertype • Canopy Cover • Tree Size • Incomplete • No South Hills coverage

  12. Attributes of Montana 1995 • Covertype (Forested): • Crosswalked (From 188 original values to 40)

  13. Attributes of Montana 1995 • Covertype (Forested): • Crosswalked (From 188 original values to 40) • Canopy Coverage (Forested): • Non tree, Low 10-40%, Moderate 41-70%, High 71-100%

  14. Attributes of Montana 1995 • Covertype (Forested): • Crosswalked (From 188 original values to 40) • Canopy Coverage (Forested): • Non tree, Low 10-40%, Moderate 41-70%, High 71-100% • Tree Size (Forested-conifer): • GFSS, Sapling (1-4.9”), Small (5-12”), Medium (12-20”), Large (>20”)

  15. Other Vegetation Sources • RMRIS (vector layer) – Covertype, Canopy Cover, Tree Size for Sawtooth South Hills (Forested) • LANDFIRE Existing Vegetation Type (EVT) – Covertype (Forested & Non-Forested) • MDA Federal Canopy Cover product (Non-Forested, 2007)

  16. Tornado, Insect Infestation, Silviculture, Fires Disturbance Sources • Tornado – Payette (red)

  17. Tornado, Insect Infestation, Silviculture, Fires Disturbance Sources • Tornado – Payette (red) • Insect Infestation – Sawtooth (white)

  18. Tornado, Insect Infestation, Silviculture, Fires Disturbance Sources • Tornado – Payette (red) • Insect Infestation – Sawtooth (white) • Silviculture – Boise & Payette (orange)

  19. Tornado, Insect Infestation, Silviculture, Fires Disturbance Sources • Tornado – Payette (red) • Insect Infestation – Sawtooth (white) • Silviculture – Boise & Payette (orange) • Fires – All Forests (green, yellow, red) • 1995-2007 • Greater than 1,000 acres

  20. Ancillary Sources • Project Boundary • PVG – Potential Vegetation (raster) • Absolute pixel space for entire project • Forested and Non-Forested masks • Subsetted PVG for conditional statements

  21. Pre-processing • Software: • ERDAS Imagine 9.2 • ESRI ArcGIS 9.2 • Quality Control & Quality Assurance of existing data • Shift-correction (multiple raster datasets) • Crosswalks

  22. Crosswalk Example

  23. Rule Sets • Individually supplied by each Forest • Biologist/Ecologist defined • Derive new canopy cover and tree size based on PVG, fire, canopy cover, tree size and other vegetation change sources.

  24. Rule Set Example • PVG 1, 2, 3, and 4: • A. If fire severity was high (4), then size=GFSS (0) and canopy = 0; • B. If fire severity was moderate (3) and • 1. Size was sapling (1) or small (2) then size=GFSS (0) and canopy = 0; • 2. Size was medium (3) or large (4) then size = no change and • a. Canopy was high (4) then canopy = moderate (3); • b. Canopy was moderate (3) then canopy = low (2); • c. Canopy was low (2) then no change • C. If fire severity was low (2) and • 1. Size was sapling (1) then size = GFSS and canopy = 0; • 2. Size was small (2), medium (3) or large (4) and • a. Canopy was high (4) then canopy = moderate (3); • …

  25. Methodology

  26. Methodology

  27. Methodology

  28. Methodology

  29. Methodology

  30. Methodology

  31. Final Product • Integrated Vector layer

  32. Final Product • Integrated Vector layer

  33. Final Product • Integrated Vector layer • One-stop ‘Shop’ • Covertype, Canopy Cover, Tree Size • Forested/Non-forested • PVG • Updated for disturbances • Fulfills requirements for interim solution

  34. Data Utilization • Update Fire Regime Condition Class (FRCC) • Wildlife Conservation Strategy (WCS) models

  35. Questions?

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